Doffing-machine for ring-spinning frames.



m. 69l ,677. Patented la n. 2|, I902.

.ltefncuon & H. S..FOSTER DOFFING MACHINE FOR RING SPINNING FRAMES.

(Application filed Sept. 12. 1901.

(No Model.)

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No. 69l,677. v Pat entd Jan. 2|, 1902.

- J. E. ncuou & H. s. FOSTER.

DOFFING MACHINE FOR RING SPINNING FRAMES.

(Application filed. Sept. 1 2, 1901.) ".(No Modal 4 Sheets- 6MB; 2.

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No. 691,677. Patented lan. 2l, 19.02..

J. E. TIC-HON & H. S. FOSTER.

DOFHNE MACHINE FOR NINE SPINNING FRAMES.

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No. e9|,s77. Patented Jan; 21,1902,

J. E. TICHON &.H..S. FOSTER. DOFFING MACHINE FOR RING SPINNING FRAMES.

(Application filed Sept. 12. 1901.)

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UNITED STATES PATENT OFFICE.

JOSEPH E. TIcHoN AND HENRY S. FOSTER, on NEW BEDFORD,

, MASSACHUSETTS.

DOFFlNG-MACHINE FOR RING-SPINNING FRAMES.

SPECIFICATION forming part of Letters Patent No. 691 ,677, dated January 21, 1902. Application filed September 12, 1901- Serial No. 76,151- (No model.)

To aZZ whom it may concern:

Be it known that We, JOSEPH E. TICHON and HENRY S. FOSTER, citizens of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Doffing-Machines for Ring-Spinning Frames, of which the following is a specification.

The increase of production of the modern ring-spinning machine has called more attention to the time lost during the stoppage of the machine necessitated by the removal of the full bobbins and the replacing of the same by empty bobbins, usually called doffing.

To reduce the time required to doif a ringspinning frame and the labor is the object of this invention.

The invention consists in an organized mechanism whereby the full or completed bobbins are removed from the spindles and empty bobbins placed on the spindles.

The invention further consists in the combination,with the spinning-frame,of the mechanism for removing the completed bobbins and replacing them with empty bobbins; and the invention further consists in the peculiar and novel construction of the doffing mech anism and the combination of the parts, more fully set forth hereinafter.

Figure 1 is a front View of the machine for removing the full bobbin and replacing the same by'an empty bobbin, termed for the purpose of this specification the doffin'g-machine, shown at one end and in front of a ring-spinning machine. Fig. 2 is an end view of the doffing-machine in connection with a ring-spinning frame, shown in section. Fig. 3 is a plan view of the bobbin-magazine and its supporting-frame. Fig. 4 is an end view of the bobbin-removin g mechanism, partly in section, showing one of the bobbinclamps connected with the endless chain and the other clamp controlled by the surfaces of the casing. Fig. 5 is a view of the edge of the bobbin-removing mechanism adjoining the spinning-frame. Fig. 6 is an end view of the bobbin supplying mechanism. Fig. 7 is a transverse sectional View taken at one of the corners of the bobbin-supplying mechanism. Fig. 8 is a sectional view of the casing and a view of one of the clamps connected with the endless chain and controlled by the surfaces of the casings of the bobbin-removing and the bobbin-supplying mechanism. Fig. 9 is a detail showing means for locking the frames of the bobbin removing and supplying mechanism in the operative positions. Fig. 10 is a top view of the bolster-rail of the ring-spinning machine, showing the cam-plate extending the length of the machine for controlling the independent movement of the bobbinmagazine and the feeler bearing on the same.

Similar marks of reference indicate corresponding parts in all the figures.

The drawings illustrate the doffing-machine as adapted for a ring-spinning machine having sixty-four spindles on one side. By increasing the capacity of the bobbin-magazine the doftlng-machine may be used for ringspinning machines of any desired length or number ofspindles.

In the drawings, (1 indicates the end frame I of a ring-spinning machine; a a, the spindles; 61. the ring-rail; 0. the strut connecting the end frames, having on its upper end the bolster-rail a and at its lower end the flange a and a a the completed or full bobbins. In the preferred form the brackets a a are secured at intervals to the strut a and the ways a a are secured to the brackets of and form the support of the doffing-machine. The rack 01, is also secured to the brackets a a to and projects from the bolster-rail 0,

The dotting-machine has the standard 1) provided with the guide-blocks b I), having rol1- ers bearing on the ways a a as is shown in Figs. 1 and 2, forming the support of and guiding the doffing-machine in its passage along the front of the ring-spinning machine. The vertical shaft 6 is supported in a journal-bearing in the center of the upper part of The cam-plate 0. is preferably secured the standard I) and in the step-bearing b on b by a set-screw or similar device, so thati the gear may be adjusted. The gear b engages with the rack a on the spinning-machine. \Vhen now the standard b, with the mechanism so far described, is moved'ialong the front of the spinning-machine by hand or any mechanical means, the gear I) in engagement with the rack a rotates the shaft 2') and through the bevel-gears imparts rotary motion to the sprocket-gears b and b in opposite directions.

On the shaft to which the bevel-pinion b and the sprocket-gear b are secured is supported the bobbin-removing mechanism 0, and on the shaft of the bevel-pinion b and the sprocket-gear b the bobbin-supplying mechanism (Z is supported, and by the movement of the doffing-maohine along the front of the spinning-machine these are operated to move in opposite directions. In their essential features the bobbin-removing and the bobbin-supplying devices are alike, and consist of a sprocketchain 0'', one or more of the links of which are formed, as shown in Fig. 8, to extend through a slot in the casing and form the supports for the arms 0 c pivotally connected with the link 0 provided with the heels 0 0 having rotatable collars which bear on the sides 0 c of the preferably twopart casing and are held in contact with the sides by the spring a, interposed between the two arms. The sprocket-chains are operated, respectively, by the sprocket-gears b and 19 as before stated, in opposite directions. To diminish the friction of the chain in passing the corners of the frame, the sheaves c c are journaled in the frames to support the chain. The frames are preferably made in two parts bolted together, a part of the chain-groove being formed in each part.

Referring now to Figs. t and 5, illustrating the bobbin-removing mechanism, it will be seen that the sprooket-gear moves the chain in the direction indicated by the arrow. The edge 0 extends vertically parallel with the spindles and the bobbins and so close to the bobbins that the clamp 6 will grip the bobbin as the heels of the clamping-arms o are forced apart by the oblique cam-surfaces c c of the frame and will hold the bobbin as it is carried upward by the clamp over the rounded end and downward along the edge c until the heels of the clamp reach the cams 0 where the width of the edge of the frame is contracted to permit the clamp to open and drop the bobbin into a suitable receptacle, preferably the bobbin-box connected to and moving with the dotting-machine. machine organized as shown in the drawings two bobbin-clamps e and e are connected with the endless chain c, as shown in Fig. 4. The frames 0 of the bobbin-removing mechanism and the bobbin-supplying mechanism are supported on the shafts of the respective sprocket-gears Z) and Z1 and are secured in the operative position to the brackets 0 by the locking device 0". (Shown in Fig. 9.)

In a

a shoulder of a ratchet one compartment The bobbin-supplying mechanism has the edge ti placed parallel with the plane of the spindles of the spinning-machine and the edge d horizontal and parallel to the empty bobbins supported in the lower part of the bobbin-magazinef. As shown in Fig. 6, the clamp 61, carried by the endless chain, is moving downward to place an empty bobbin on the spindle while the clamp d grips the lowest bobbin in the magazine and carries the same toward the spinning-machine to be placed on the next spindle.

To compensate for the forward movement of the dotting-machine during the lifting oil of the full bobbins and the downward movement for placing the empty bobbins on .the spindles, the bobbin-removing mechanism 0 and the bobbin-supplying mechanism d are inclined in opposite directions.

The magazinef consists of a case divided by partitions into a number of receptacles adapted to hold a predetermined number of empty bobbins. As shown in the drawings, the magazine has eight compartments adapted to hold eight bobbins each, enough to supply the sixty-four spindles on one side of the ring-spinning machine. The bottom of the magazine consists of eight pockets, slotted part of their length to permit the arms of the clamps d to grasp a bobbin, draw it out of the magazine, and place the bobbin on the spindle. The case forming the magazine fits into the slide f and extends through and below the slide, being supported by the flange f secured about midway to the case. The slide f is supported on the frame f, the two longer sides of which form ways on which the slide may move. \Vhen the lowest bobbin in the first compartment of the magazine is removed by the bobbin-supplying mechanism, the rest of the bobbins drop by gravity and reach successively the slotted bottom. Nhen the last bobbin of the first compartment of the magazine is removed, the slide f is moved forward one compartment, and so on, as a compartment is emptied the next full compartment is moved into the path of the clamps on the bobbin-supplying mechanism (Z. A simple and efficient mechanism for effecting the forward movement is shown in the drawings and consists in the spring-actuated pulley f journaled in a fork at the end of the frame f. The strap f 011 the pulley is connected with the slide f On the under side of the slide f are two ratchet-ba1'sf f The length of each ratchet is equal to two compartments of the magazine; but the ratchet-bars f f are secured to the slide so as to lap and place apart on alternately opposite sides. A double pawl f is centrally pivoted on the bracket f secured to the framej. The pendulumarm f extends from the double pawl f and is connected with the rod f ,to the other end of which is secured the spring-pressed roller f, which, acting as a feeler, bears against the cam-plate (0 and operates the double pawl f at predetermined intervals to engage alternately with one of the two ratchetbars f and permit of the movement of the magazine one compartment. The frame f is secured to the posts f extending from the bracket f secured to the standard I).

We do not wish to confine ourselves to the exact construction of the mechanism or to any particular mechanism for operating the machine, as these may be changed without materially aflecting our invention. A simple method for operating the machine consists in extending the shaft Z2 on which the bevel-pinion b and the sprocket-gear b are secured, and providing the same with the hand-crank b, as is shown in Figs. 1, 2, and 6.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. A doffingmachine for ring-spinning frames having the bobbin-removing mechanism, means for moving the supplying mechanism oblique to the axis of the spindle, and the'bobbin-supplying mechanism constructed to move oblique to the axis of the spindle of the machine, as described.

2. In a doffing-machine for ring-spinning frames, a bobbin-removing device operated to move oblique to the vertical axis of the spindles of thespinning-frame, and means for operating the bobbin-removin g device oblique to the vertical axis of the spindle, as described.

3. A doling-machine for ring-spinning frames having a bobbin-supplying mechanism provided with a bobbin-carrier moving in a plane oblique to the axis of the spindle, and means for moving the bobbin-carrier, as described.

4. Inadoffing-machine forspinning-frames, the combination of the following instrumentalities: a bobbin-magazine, a bobbin-supplying mechanism, a bobbin-removing mechanism, a structure forming the support of the magazine, the bobbin-removing and the bobbin-supplying mechanism, ways parallel with the spindles of the spinning-frame forming the support of the machine, mechanism operating the bobbin-supplying and the bobbin-removing mechanism, and means for moving the dotting-machine along the front of a spin ning-machine, as described.

5. In combination with a spinning-machine, a dofling-machine having a magazine for the empty spindles, a bobbin-supplying mechanism comprising abobbin-clamp, a bobbin-removing mechanism havinga clamp moving in a plane oblique to the axis of rotation of the spindle from which the bobbin is removed, and a receptacle for the completed bobbin, as described.

6..Inadoffing-machineforspinning-frames, a bobbin-removing mechanism comprising a frame, a slot extending along the peripheral edges around the .frame, an endless chain,

grooves, connected with the peripheral slot,- for the chain, a link in the chain extending through the slot, clamping-arms pivoted on nation with mechanism for operating the.

chain, as described.

- 8. In adoffing-machine forspinning-frames, a bobbin-magazine having a concave part of the bottom, forming the support of the lowest bobbin, open on one end and along the path of the bobbin, to facilitate the removal of the bobbin from the magazine, as described.

9. Inadoffing-machine forspinning-frames, a bobbin-magazine divided into a series of compartments and having a bottomsupport for part of a bobbin only, as described.

10. In a doffingmachine for spinningframes, the combination with the bobbin-supplying mechanism and a bobbin-magazine divided into a series of compartments and having a bobbin-support for part of a bobbin only, of means for moving the magazine automatically to place the compartments successively into the path of the bobbin-carrier, as described.

11. In a doffing-machine for spinningframes,the combination with the magazine divided into a series of compartments, of a slide forming the support of the magazine,.

ways supporting the slide, means for moving the slide, when a compartment of the magazine is emptied, to bring the next compartment into the position'formerly occupied by the emptied compartment, and means 'for locking the magazine in each position, as described.

12. The combination with a spinning-frame, a rack on the same extending along the frame in front of the spindles, and ways on the spinning-frame, of a doffing-machine supported on the ways, a bobbin-removing and a bobbin-supplying mechanism, bobbin-carriers on the same moving in paths oblique to the vertical axis of the spindles, a bobbinmagazine, a receptacle for the completed bobbin, and mechanism connected with the rack on the spinning-machine operating the doffing-machine, as described.

In testimony whereof we have signed our names to thisspecification in the presence 0 two subscribing witnesses.

JOSEPH. E. TIOHON. HENRY S. FOSTER.

" Witnesses:

B. M. SIMMs, JOSEPH A. MILLER. 

